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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e70ff0194b3fd5c7e1cc61ee58853a9de74fd25e325057ee1a9216538d43ad4' 
  AND token = 'NmA6M5OvauKFa6z3FTVb9istEN0ugQskprBYaKiE6i8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}